Revert of Cast: Log playout delay from receiver

Revert of Cast: Log playout delay from receiver (https://codereview.chromium.org/401213002/)

Reason for revert:
This patch seems to break CastStreamingApiTestWithPixelOutput.EndToEnd.

http://build.chromium.org/p/chromium.linux/builders/Linux%20Tests%20%28dbg%29%281%29/builds/32598/steps/browser_tests/logs/EndToEnd

Original issue's description:
> Cast: Log playout delay from receiver
> 
> The last refactoring in RTCP handling dropped the playout delay from
> receiver. This change adds it back.
> 
> TBR=miu
> BUG=393042
> 
> Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=284395

TBR=miu@chromium.org,hclam@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=393042
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=284411

[dgozman, 2014-07-21 11:29:13]

Created Revert of Cast: Log playout delay from receiver

[commit-bot: I haz the power, 2014-07-21 11:30:27]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/dgozman@chromium.org/401273002/1

[commit-bot: I haz the power, 2014-07-21 11:31:34]

Change committed as 284411

[Alpha Left Google, 2014-07-21 18:10:34]

A revert of this CL has been created in
https://codereview.chromium.org/410443002/ by hclam@chromium.org.

The reason for reverting is: This revert wouldn't solve the flakiness. The fix
for flakiness is in CQ now. Reverting this.
.